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An audio-reactive twin-stick bullet-hell where the song is the weapon. Play hand-tuned packs, import any track, or drop in a music video and fight inside it: the song builds the level, the video plays behind the fight, and every bullet locks to the beat.
Price history tracked since Jul 10, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 10, 2026.
Steam Social Deduction Fest ends
Official stores with direct support.
SUBSØNIC is an audio-reactive twin-stick bullet-hell where every wave, every pattern, and every boss is built from the song you're playing. Enemies spawn on the onsets. Bullets quantize to the beat. Boss phases follow the track's own structure; the verse builds, the chorus swarms, the drop is a wall. Beat the song and you beat the level.
Drop in an mp4 or mov and SUBSØNIC pulls the song, builds the entire level from it, and plays the video behind the fight. You're not fighting to your favorite music video anymore; you're fighting inside it.
Curated packs — three hand-tuned packs shipped with the game, analyzed and balanced track by track, each building to its own megaboss. Plus bonus tracks for free play. Press play.
Bring your own music — import mp3, flac, wav, or ogg. SUBSØNIC analyzes it offline in seconds, detects its key and structure, and turns it into a playable bullet-hell stage. Your library becomes the game.
Bring your own video — import mp4 or mov. Same analysis, and the video itself becomes the battlefield backdrop.
SUBSØNIC reads the harmonic key of whatever is playing and tunes your fire to match. The whole screen blooms in time; austere vector geometry, heavy bloom, reactive to the mix. It is loud, clean, and built to be watched as much as played.
Draft pick-1-of-3 SOUNDCHECK upgrades between songs, stack beat-locked powerups, and grow a tail that is both weapon and wall; wrap enemies Tron-style and nothing gets out. Survive UMBRA, the anti-bloom darkness that inverts the game's light. A live destruction meter rides above your ship, from WARMING UP to ANNIHILATION.
Every run is scored. Chase the S-rank, clear a stage without taking a hit, earn per-song medals, and push three packs of escalating intensity toward their finales: three distinct megabosses, each one a fight tuned to the song behind it.
Audio-reactive spawns, patterns, and boss phases driven by real signal analysis
Video import (mp4 / mov): the song builds the level, the video plays behind the fight
Curated packs plus full user-music import (mp3 / flac / wav / ogg)
Harmonic key detection that tunes your shooting bloom to the track
SOUNDCHECK upgrade drafts, beat-locked powerups, and a tail that walls off enemies
UMBRA: anti-bloom darkness events that invert the light
Three packs, three megaboss finales, plus free-play bonus tracks
Score attack with letter grades, per-song medals, no-hit clears, and 19 Steam achievements
True HDR output, on by default on HDR displays
A live destruction meter above your ship, from WARMING UP to ANNIHILATION
Full controller and keyboard + mouse support
Adjustable motion intensity for comfort; dial the screen shake and effects down or off
Offline-first. No account, no always-online, no nonsense.
Premium price, no microtransactions, no crypto, no live-service hooks. Buy it, own it, play it offline forever.
